Bitwise operation not concatenating with string in print() in Java

up vote
7
down vote

favorite

This code

int a = 6;

System.out.print("The result is " + a*a);

works just fine, but this one

int a = 6;

System.out.print("The result is " + a^a);

produces an exception:

Exception in thread "main" java.lang.RuntimeException: Uncompilable
source code - Erroneous tree type: at
pkg1.pkg4.taking.input.TakingInput.main(TakingInput.java:11)

Why so?

The question arose when I was trying to print the results of several bitwise operations in one swoop, like so:

System.out.print(a&b + "n" + a|b + "n" + a^b);

I looked up the description of the print() method and several topics on bitwise operators and printing to the console on SO including the recommended topics when composing the question, but couldn't find an answer.

edited 1 hour ago

asked 2 hours ago

John Allison

165112

I wonder what Java version are you compiling this with, it doesn't compile with java-11 for sure, forget RuntimeException!
– nullpointer
1 hour ago

That's what the error says: uncompilable source code. Another problem was I was using single quotes instead of double quotes with n.
– John Allison
1 hour ago

add a comment |

up vote
7
down vote

favorite

This code

int a = 6;

System.out.print("The result is " + a*a);

works just fine, but this one

int a = 6;

System.out.print("The result is " + a^a);

produces an exception:

Exception in thread "main" java.lang.RuntimeException: Uncompilable
source code - Erroneous tree type: at
pkg1.pkg4.taking.input.TakingInput.main(TakingInput.java:11)

Why so?

The question arose when I was trying to print the results of several bitwise operations in one swoop, like so:

System.out.print(a&b + "n" + a|b + "n" + a^b);

edited 1 hour ago

asked 2 hours ago

John Allison

165112

I wonder what Java version are you compiling this with, it doesn't compile with java-11 for sure, forget RuntimeException!
– nullpointer
1 hour ago

That's what the error says: uncompilable source code. Another problem was I was using single quotes instead of double quotes with n.
– John Allison
1 hour ago

add a comment |

up vote
7
down vote

favorite

This code

int a = 6;

System.out.print("The result is " + a*a);

works just fine, but this one

int a = 6;

System.out.print("The result is " + a^a);

produces an exception:

Exception in thread "main" java.lang.RuntimeException: Uncompilable
source code - Erroneous tree type: at
pkg1.pkg4.taking.input.TakingInput.main(TakingInput.java:11)

Why so?

The question arose when I was trying to print the results of several bitwise operations in one swoop, like so:

System.out.print(a&b + "n" + a|b + "n" + a^b);

edited 1 hour ago

asked 2 hours ago

John Allison

165112

This code

int a = 6;

System.out.print("The result is " + a*a);

works just fine, but this one

int a = 6;

System.out.print("The result is " + a^a);

produces an exception:

Exception in thread "main" java.lang.RuntimeException: Uncompilable
source code - Erroneous tree type: at
pkg1.pkg4.taking.input.TakingInput.main(TakingInput.java:11)

Why so?

The question arose when I was trying to print the results of several bitwise operations in one swoop, like so:

System.out.print(a&b + "n" + a|b + "n" + a^b);

java printing bitwise-operators operator-precedence

edited 1 hour ago

asked 2 hours ago

John Allison

165112

edited 1 hour ago

asked 2 hours ago

John Allison

165112

edited 1 hour ago

asked 2 hours ago

John Allison

165112

asked 2 hours ago

John Allison

165112

asked 2 hours ago

John Allison

165112

I wonder what Java version are you compiling this with, it doesn't compile with java-11 for sure, forget RuntimeException!
– nullpointer
1 hour ago

That's what the error says: uncompilable source code. Another problem was I was using single quotes instead of double quotes with n.
– John Allison
1 hour ago

add a comment |

I wonder what Java version are you compiling this with, it doesn't compile with java-11 for sure, forget RuntimeException!
– nullpointer
1 hour ago

That's what the error says: uncompilable source code. Another problem was I was using single quotes instead of double quotes with n.
– John Allison
1 hour ago

I wonder what Java version are you compiling this with, it doesn't compile with java-11 for sure, forget RuntimeException!
– nullpointer
1 hour ago

That's what the error says: uncompilable source code. Another problem was I was using single quotes instead of double quotes with n.
– John Allison
1 hour ago

add a comment |

1 Answer
1

active

oldest

votes

up vote
13
down vote

accepted

This is because the + has higher precedence than the ^ so it compiles to:

("The result is " + a) ^ a

Which obviously will not work. Put parenthesis around it:

System.out.print("The result is " + (a^a));

edited 2 hours ago

answered 2 hours ago

GBlodgett

7,85541531

1

Ouch... that was so basic... Thanks. :)
– John Allison
2 hours ago

@JohnAllison If you used an IDE, you would probably know about this before you actually compile and run it.
– Jai
2 hours ago

add a comment |

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53606291%2fbitwise-operation-not-concatenating-with-string-in-print-in-java%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
13
down vote

accepted

This is because the + has higher precedence than the ^ so it compiles to:

("The result is " + a) ^ a

Which obviously will not work. Put parenthesis around it:

System.out.print("The result is " + (a^a));

edited 2 hours ago

answered 2 hours ago

GBlodgett

7,85541531

1

Ouch... that was so basic... Thanks. :)
– John Allison
2 hours ago

@JohnAllison If you used an IDE, you would probably know about this before you actually compile and run it.
– Jai
2 hours ago

add a comment |

up vote
13
down vote

accepted

This is because the + has higher precedence than the ^ so it compiles to:

("The result is " + a) ^ a

Which obviously will not work. Put parenthesis around it:

System.out.print("The result is " + (a^a));

edited 2 hours ago

answered 2 hours ago

GBlodgett

7,85541531

1

Ouch... that was so basic... Thanks. :)
– John Allison
2 hours ago

@JohnAllison If you used an IDE, you would probably know about this before you actually compile and run it.
– Jai
2 hours ago

add a comment |

up vote
13
down vote

accepted

This is because the + has higher precedence than the ^ so it compiles to:

("The result is " + a) ^ a

Which obviously will not work. Put parenthesis around it:

System.out.print("The result is " + (a^a));

edited 2 hours ago

answered 2 hours ago

GBlodgett

7,85541531

This is because the + has higher precedence than the ^ so it compiles to:

("The result is " + a) ^ a

Which obviously will not work. Put parenthesis around it:

System.out.print("The result is " + (a^a));

edited 2 hours ago

answered 2 hours ago

GBlodgett

7,85541531

edited 2 hours ago

answered 2 hours ago

GBlodgett

7,85541531

answered 2 hours ago

GBlodgett

7,85541531

answered 2 hours ago

GBlodgett

7,85541531

1

Ouch... that was so basic... Thanks. :)
– John Allison
2 hours ago

@JohnAllison If you used an IDE, you would probably know about this before you actually compile and run it.
– Jai
2 hours ago

add a comment |

1

Ouch... that was so basic... Thanks. :)
– John Allison
2 hours ago

@JohnAllison If you used an IDE, you would probably know about this before you actually compile and run it.
– Jai
2 hours ago

Ouch... that was so basic... Thanks. :)
– John Allison
2 hours ago

@JohnAllison If you used an IDE, you would probably know about this before you actually compile and run it.
– Jai
2 hours ago

add a comment |

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

Some of your past answers have not been well-received, and you're in danger of being blocked from answering.

Please pay close attention to the following guidance:

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Sstrhsrtj