System.in 从“标准输入”读入数据（java.io.InputStream 类型） System.out 向“标准输出”写出数据（java.io.PrintStream 类型） System.err 向“标准错误”写出数据（java.io.PrintStream 类型） O PrintStream 类的主要方法 print()/println() 方法��行���重��boolean�char�int� System.in 从“标准输入”读入数据（java.io.InputStream 类型） System.out 向“标准输出”写出数据（java.io.PrintStream 类型） System.err 向“标准错误”写出数据（java.io.PrintStream 类型） O PrintStream 类的主要方法 print()/println() 方法��行���重��boolean�char�int�

an OutputStream and one that accepts a Writer. For example, invoking print(System.err) prints the result data to System.err, while invoking print(myWriter) prints the result data to a custom writer.

first error in an appender and ignoring all following errors. The error message is printed on System.err . This policy aims at protecting an otherwise working application from being flooded with error secondary appender to take over if the primary appender fails. The error message is printed on System.err , and logged in the secondary appender. You can define the error handler that you want to use session.createChannel("shell"); channel.setIn(System.in); channel.setOut(System.out); channel.setErr(System.err); channel.open(); channel.waitFor(ClientChannel.CLOSED, 0); } catch (Throwable t) { t.printStackTrace();

console log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.target=System.err log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.Con

console log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.target=System.err log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.Con

"name=Boot"); OutputCapture OutputCapture is a JUnit Rule that you can use to capture System.out and System.err output. Simply declare the capture as a @Rule then use toString() for assertions: import org.junit server.jetty.accesslog.filename= # Log filename. If not specified, logs will be redirected to "System.err". server.jetty.accesslog.locale= # Locale of the request log. server.jetty.accesslog.log-cookies=false

"name=Boot"); OutputCapture OutputCapture is a JUnit Rule that you can use to capture System.out and System.err output. Simply declare the capture as a @Rule then use toString() for assertions: import org.junit server.jetty.accesslog.filename= # Log filename. If not specified, logs will be redirected to "System.err". server.jetty.accesslog.locale= # Locale of the request log. server.jetty.accesslog.log-cookies=false

console log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.target=System.err log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.Con

console log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.target=System.err log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.Con

"name=Boot"); OutputCapture OutputCapture is a JUnit Rule that you can use to capture System.out and System.err output. Simply declare the capture as a @Rule then use toString() for assertions: import org.junit